Coronavirus prep

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  • TonyB0588
    TonyB0588 Posts: 9,520 Member
    TonyB0588 wrote: »
    Texas is supposed to start cautiously resuming some economic activities Friday. My county, Denton, now has 18 deaths from covid-19. I have been watching the deaths and counting the days between doublings. The 16th death, which was the fourth doubling, was posted this recent Saturday, with a span of 8 days from the 3rd doubling. They've been posted mostly in singles all through this time. If that rate of death, 1 per day, simply persists it will stretch the 5th doubling to 16 days. The statistically important thing is the days-between-doublings. To see that number grow is to know that the rate of death is falling and to infer that the rate of infection had fallen two weeks ago. As the state begins to resume operating, I'll keep watching my county's numbers.

    Are you also watching the rate of new infections? How many days between doubling of total infections?

    Where I live, very few are dying, so that's not an interesting figure to watch. The number of recoveries per day compared to the number of new infections per day is my benchmark now.

    The problem with using infections as a benchmark is that it’s entirely dependent on testing. It’s impossible to know whether infections are increasing because of increased testing, or falling because testing has stalled for some reason such as lack of swabs.

    Yes I see your point. But I'm certainly happy to see the majority of confirmed infections here actually recovering instead of dying.
  • amusedmonkey
    amusedmonkey Posts: 10,330 Member
    TonyB0588 wrote: »
    TonyB0588 wrote: »
    Texas is supposed to start cautiously resuming some economic activities Friday. My county, Denton, now has 18 deaths from covid-19. I have been watching the deaths and counting the days between doublings. The 16th death, which was the fourth doubling, was posted this recent Saturday, with a span of 8 days from the 3rd doubling. They've been posted mostly in singles all through this time. If that rate of death, 1 per day, simply persists it will stretch the 5th doubling to 16 days. The statistically important thing is the days-between-doublings. To see that number grow is to know that the rate of death is falling and to infer that the rate of infection had fallen two weeks ago. As the state begins to resume operating, I'll keep watching my county's numbers.

    Are you also watching the rate of new infections? How many days between doubling of total infections?

    Where I live, very few are dying, so that's not an interesting figure to watch. The number of recoveries per day compared to the number of new infections per day is my benchmark now.

    The problem with using infections as a benchmark is that it’s entirely dependent on testing. It’s impossible to know whether infections are increasing because of increased testing, or falling because testing has stalled for some reason such as lack of swabs.

    Yes I see your point. But I'm certainly happy to see the majority of confirmed infections here actually recovering instead of dying.

    Yes, same here. We haven't had a death in a good while, so that's not a useful metric. In our case, new infections is also not a useful metric right now because of policy changes. All drivers of trucks bringing import items are to be tested at borders and are counted toward the cases even if they were to deliver their shipment and immediately leave the country. They will also be gradually flying back tens of thousands of students who are studying abroad in the near future. These will be quarantined before they're released so although anyone who tests positive will count toward cases, they aren't really a meaningful risk.

    I currently measure progress by the nature of new cases. They usually mention the number of cases daily then list the details such as if the case was imported, close contact of a known case, or unknown source of transmission. The fewer unknowns the better, in my opinion.

    With lockdown being rolled back slowly, they have been increasing testing, and plan to keep increasing it the more things open up, so we might see larger numbers in the future. Our curve will not look like the typical bell curve because of all of the above.
  • Nony_Mouse
    Nony_Mouse Posts: 5,646 Member
    TonyB0588 wrote: »
    TonyB0588 wrote: »
    Texas is supposed to start cautiously resuming some economic activities Friday. My county, Denton, now has 18 deaths from covid-19. I have been watching the deaths and counting the days between doublings. The 16th death, which was the fourth doubling, was posted this recent Saturday, with a span of 8 days from the 3rd doubling. They've been posted mostly in singles all through this time. If that rate of death, 1 per day, simply persists it will stretch the 5th doubling to 16 days. The statistically important thing is the days-between-doublings. To see that number grow is to know that the rate of death is falling and to infer that the rate of infection had fallen two weeks ago. As the state begins to resume operating, I'll keep watching my county's numbers.

    Are you also watching the rate of new infections? How many days between doubling of total infections?

    Where I live, very few are dying, so that's not an interesting figure to watch. The number of recoveries per day compared to the number of new infections per day is my benchmark now.

    The problem with using infections as a benchmark is that it’s entirely dependent on testing. It’s impossible to know whether infections are increasing because of increased testing, or falling because testing has stalled for some reason such as lack of swabs.

    Yes I see your point. But I'm certainly happy to see the majority of confirmed infections here actually recovering instead of dying.

    Yes, same here. We haven't had a death in a good while, so that's not a useful metric. In our case, new infections is also not a useful metric right now because of policy changes. All drivers of trucks bringing import items are to be tested at borders and are counted toward the cases even if they were to deliver their shipment and immediately leave the country. They will also be gradually flying back tens of thousands of students who are studying abroad in the near future. These will be quarantined before they're released so although anyone who tests positive will count toward cases, they aren't really a meaningful risk.

    I currently measure progress by the nature of new cases. They usually mention the number of cases daily then list the details such as if the case was imported, close contact of a known case, or unknown source of transmission. The fewer unknowns the better, in my opinion.

    With lockdown being rolled back slowly, they have been increasing testing, and plan to keep increasing it the more things open up, so we might see larger numbers in the future. Our curve will not look like the typical bell curve because of all of the above.

    Our lovely bell curve may not continue to look like that as things increasingly open up, either. Though if the numbers are going up once we're in Level 2, we'll presumably go back into alert Level 3, depending on where those cases are coming from. We'll continue to have cases coming in from overseas in small numbers (returning NZers, who go into mandatory quarantine if they are symptomatic, or managed self-isolation if they are not).
  • paperpudding
    paperpudding Posts: 9,526 Member
    yes that is why I am confident we do have it under control in South Australia - and most other australian states.

    Because very low number of new cases is not a reflection of less testing - in fact the opposite - as of a week ago, anyone with any flu like symptoms, no matter how mild, can be tested.

    Of course there is the possibility of infected people not getting tested - but given high numbers of tests being done and very low numbers of community transmission, that would seem unlikely.

    There is also possibility of false negatives - but I guess one has to have some trust in the system - and again very low numbers of community transmission would suggest it is extremely unlikely people are falsely testing negative - because if that were so, they would falsely be getting all clear to go to work etc - and we would see more flow on cases with no known contact cause.

    Social restrictions remain in place - but not as tight as some places, including eastern states of Australia.

    All incoming people , with very few exceptions, whether from overseas or interstate, must self quarnatine for 14 days.
  • lemurcat2
    lemurcat2 Posts: 7,887 Member
    edited April 2020
    lkpducky wrote: »
    In Los Angeles County our numbers are going up (16,435 cases, 729 deaths) as our testing numbers are going up. At least more are being tested. We'll have to see day by day if the May 15 end of the stay in place will still be that date.

    Yeah, same here. The numbers were staying steady, but they have been trying to increase testing (eliminated the requirement of a dr referral and also and added a bunch more sites in apparently more affected areas (South and West sides of Chicago and East St. Louis)), and the numbers jumped again. It feels really discouraging although I know increased testing is the key to being able to open up more quickly.

    2049 more known cases today, and 98 more deaths. Totals (for IL) of 35,108 cases, and 1,565 deaths.

    Chicago is at 14,394 and 604, with Cook County as a whole at 24,546 and 1072.

    I find the differences between the numbers in various places (for example, NY and CA), even places following basically the same policies for the same amount of time intriguing, although no idea what the answers are.
  • corinasue1143
    corinasue1143 Posts: 7,460 Member
    JustSomeEm wrote: »
    Some people are only counting people who have a positive test followed by 2 negative tests 2 weeks apart. In other words, no one has recovered yet.
    On the news last night, a man with leukemia went to his usual hospital with symptoms he had before and they treated before. The hospital was full so they redirected him to another hospital, where they promptly sent him straight to the corona ward. He got worse and worse and was found dead the next morning, untreated for leukemia. Was he counted as a Corona death? He died in the corona ward. (Just an interesting aside, the hospital didn’t notify the family he died. The family is still trying to get info from the hospital, but they won’t talk to the family.)
    That is incredibly sad and very concerning. There's a lot going on here - where did this happen, and do you have a link to the article? I'd like to read it if you do.

    Oops! Non-hodgens, not leukemia.
    Sorry, I don’t know how to post links, but maybe you can google it from this.

    0ffyvf660ll1.png
  • cmriverside
    cmriverside Posts: 34,819 Member
    Nony_Mouse wrote: »
    yes that is why I am confident we do have it under control in South Australia - and most other australian states.

    Because very low number of new cases is not a reflection of less testing - in fact the opposite - as of a week ago, anyone with any flu like symptoms, no matter how mild, can be tested.

    Of course there is the possibility of infected people not getting tested - but given high numbers of tests being done and very low numbers of community transmission, that would seem unlikely.

    There is also possibility of false negatives - but I guess one has to have some trust in the system - and again very low numbers of community transmission would suggest it is extremely unlikely people are falsely testing negative - because if that were so, they would falsely be getting all clear to go to work etc - and we would see more flow on cases with no known contact cause.

    Social restrictions remain in place - but not as tight as some places, including eastern states of Australia.

    All incoming people , with very few exceptions, whether from overseas or interstate, must self quarnatine for 14 days.

    Yep, same for NZ - so much as a sniffle and you can get tested, and that will continue as restrictions lift. People are being encouraged to contact their GP or Healthline as soon as they feel unwell, because maintaining control requires identifying and isolating any new cases plus close contacts as quickly as possible.

    We had a bit of a dip in numbers being tested (Australia did too), simply because there are fewer respiratory illnesses circulating due to the restrictions in place. We haven't actually had any days where full testing capacity was reached (day before yesterday was the highest, with 5289 tests processed, only 6 came back positive).

    Here, we have a category of 'probable', for where a test result has come back negative, but all clinical signs point to COVID-19. So of our 1451 total, 338 are probable cases.

    Wait. Are you saying they think the testing is not catching the Covid 19 cases, or....what does this mean? I mean, the virus is sequenced..it is or it isn't - pretty cut and dry. I don't get that "probable."

    Of course, "probably" a lot of not-tested infected people and a lot who had it and recovered and never got tested.

    Lots of ways this can be an majorly imperfect test system because people and chaos.

  • lemurcat2
    lemurcat2 Posts: 7,887 Member
    Apparently there are a number of false negatives. Ross Douthat (the conservative NYT columnist) thinks he, his wife, and his son all had it, but Ross's test came back negative and his son's inconclusive, and at that point they were on the mend so did not retest. He was discussing the false negative issue on one of the episodes of his podcast (The Argument).
  • lemurcat2
    lemurcat2 Posts: 7,887 Member
    edited April 2020
    JustSomeEm wrote: »
    Some people are only counting people who have a positive test followed by 2 negative tests 2 weeks apart. In other words, no one has recovered yet.
    On the news last night, a man with leukemia went to his usual hospital with symptoms he had before and they treated before. The hospital was full so they redirected him to another hospital, where they promptly sent him straight to the corona ward. He got worse and worse and was found dead the next morning, untreated for leukemia. Was he counted as a Corona death? He died in the corona ward. (Just an interesting aside, the hospital didn’t notify the family he died. The family is still trying to get info from the hospital, but they won’t talk to the family.)
    That is incredibly sad and very concerning. There's a lot going on here - where did this happen, and do you have a link to the article? I'd like to read it if you do.

    Oops! Non-hodgens, not leukemia.
    Sorry, I don’t know how to post links, but maybe you can google it from this.

    0ffyvf660ll1.png

    Here's a link: https://kfor.com/health/coronavirus/he-did-not-deserve-to-die-like-he-did-cancer-patient-dies-in-covid-19-unit-while-family-waits-on-test/

    Looks like this was a month ago, not counted as COVID. Probably not a death related to COVID either, but sad for the family.
  • Nony_Mouse
    Nony_Mouse Posts: 5,646 Member
    edited April 2020
    Nony_Mouse wrote: »
    yes that is why I am confident we do have it under control in South Australia - and most other australian states.

    Because very low number of new cases is not a reflection of less testing - in fact the opposite - as of a week ago, anyone with any flu like symptoms, no matter how mild, can be tested.

    Of course there is the possibility of infected people not getting tested - but given high numbers of tests being done and very low numbers of community transmission, that would seem unlikely.

    There is also possibility of false negatives - but I guess one has to have some trust in the system - and again very low numbers of community transmission would suggest it is extremely unlikely people are falsely testing negative - because if that were so, they would falsely be getting all clear to go to work etc - and we would see more flow on cases with no known contact cause.

    Social restrictions remain in place - but not as tight as some places, including eastern states of Australia.

    All incoming people , with very few exceptions, whether from overseas or interstate, must self quarnatine for 14 days.

    Yep, same for NZ - so much as a sniffle and you can get tested, and that will continue as restrictions lift. People are being encouraged to contact their GP or Healthline as soon as they feel unwell, because maintaining control requires identifying and isolating any new cases plus close contacts as quickly as possible.

    We had a bit of a dip in numbers being tested (Australia did too), simply because there are fewer respiratory illnesses circulating due to the restrictions in place. We haven't actually had any days where full testing capacity was reached (day before yesterday was the highest, with 5289 tests processed, only 6 came back positive).

    Here, we have a category of 'probable', for where a test result has come back negative, but all clinical signs point to COVID-19. So of our 1451 total, 338 are probable cases.

    Wait. Are you saying they think the testing is not catching the Covid 19 cases, or....what does this mean? I mean, the virus is sequenced..it is or it isn't - pretty cut and dry. I don't get that "probable."

    Of course, "probably" a lot of not-tested infected people and a lot who had it and recovered and never got tested.

    Lots of ways this can be an majorly imperfect test system because people and chaos.

    Probables are people who are symptomatic of COVID-19, clinicians feel likely do have it (possibly due to having close contact with a confirmed case as well as being symptomatic), but for whatever reason, the test came back negative. No test is 100% reliable, and the COVID-19 nose swab test requires getting enough tissue cells on the swab. Some people likely to have it haven't been tested (eg, one of our clusters involved patients in a dementia ward, putting them through testing would have been hugely traumatic, and not changed their treatment, nor the outcome).

    From our Ministry of Health case definition:

    Probable case
    • A case that meets the clinical criteria where other known aetiologies that fully explain the clinical
    presentation have been excluded and either has laboratory suggestive evidence or for whom testing
    for SARS-CoV-2 is inconclusive, or
    • a close contact of a confirmed case that either meets the clinical criteria and for whom testing cannot
    be performed, or
    • a is a negative result but a public health risk assessment indicates they should be classified as a
    probable case.
    Laboratory suggestive evidence requires detection of coronavirus from a clinical specimen using pancoronavirus NAAT (PCR).


    Full case definition: https://www.health.govt.nz/system/files/documents/pages/covid-19-case_definitions16april2020.pdf
  • cmriverside
    cmriverside Posts: 34,819 Member
    lemurcat2 wrote: »
    Apparently there are a number of false negatives. Ross Douthat (the conservative NYT columnist) thinks he, his wife, and his son all had it, but Ross's test came back negative and his son's inconclusive, and at that point they were on the mend so did not retest. He was discussing the false negative issue on one of the episodes of his podcast (The Argument).

    Actual REAL false negatives or someone like Douthat insisting that he is right and the test is wrong. I mean, that's pretty arrogant.





    Kind of like me insisting me and my cat had it even though we didn't get tested? :lol:
  • lemurcat2
    lemurcat2 Posts: 7,887 Member
    edited April 2020
    lemurcat2 wrote: »
    Apparently there are a number of false negatives. Ross Douthat (the conservative NYT columnist) thinks he, his wife, and his son all had it, but Ross's test came back negative and his son's inconclusive, and at that point they were on the mend so did not retest. He was discussing the false negative issue on one of the episodes of his podcast (The Argument).

    Actual REAL false negatives or someone like Douthat insisting that he is right and the test is wrong. I mean, that's pretty arrogant.





    Kind of like me insisting me and my cat had it even though we didn't get tested? :lol:

    Yes, there is some evidence that there are a number of false negatives (it's not uncommon for tests). He discusses that in the podcast.

    Here's one example: https://www.npr.org/sections/health-shots/2020/04/21/838794281/study-raises-questions-about-false-negatives-from-quick-covid-19-test

    Another, probably more relevant to Ross's case: https://www.advisory.com/daily-briefing/2020/04/06/false-negative

    (And I'm not convinced Ross had it, I'm just not ruling out the possibility that he did, as with the NZ gov't and their probables.)
  • AnnPT77
    AnnPT77 Posts: 37,227 Community Helper
    In passing, I heard some discussion of false negatives and false positives on NPR today (at least I think it was today). I wasn't listening all that closely but there was some aspect about looking at the genetic sequences, and how the sequences have similarities to other coronaviruses, so possibly some tests produce ambiguous/unconfirmed results.
  • fitlulu4150
    fitlulu4150 Posts: 1,371 Member
    edited April 2020
    I didn't have a chance to look back through all the posts today but wondered if anyone highlighted the fact that here in CA (Santa Clara County) based on autopsy results of people who died at home, we had a COVID-19 death on Feb 7 and another on Feb 17 as confirmed by the CDC. The virus was here earlier than we thought apparently.

    I've maintained my suspicion that my husband had COVID-19 in early February after we returned from a trip to SF from Jan 24 to 27. We flew in and out of Oakland, ate at 3 different restaurants, went wine tasting and went on an ice cream tour. About a week after we got home hubby was sick, fever, night sweats, lethargy, and a slight cough. He made an appointment at the doctor after about 6 days of being sick but woke up that morning feeling better and cancelled the appointment.

    I'm not counting on the possibility that he had it, and possibly me too, even though I really didn't feel sick, but it would be nice to know. Hoping to get him the antibody test when it becomes widely available. Our daughter and 2 year old grandson (in Golden, Co) said they will be on a plane heading to CA the day after we get those results.

    So many questions and so few answers!
  • JustSomeEm
    JustSomeEm Posts: 20,313 MFP Moderator
    edited April 2020

    Oops! Non-hodgens, not leukemia.
    Sorry, I don’t know how to post links, but maybe you can google it from this.

    0ffyvf660ll1.png

    Thanks - that is super sad and incredibly infuriating. Several medical professionals were negligent here. How did he go from a mild fever to intubation? And post mortem-testing showed no COVID... so what prompted them to intubate, I wonder. I hope his family gets answers.
  • corinasue1143
    corinasue1143 Posts: 7,460 Member
    Our governor has loosened the rules a little. We can get a haircut starting tomorrow. The 3 big cities with the most cases and deaths said, nope, not for us. We will stay in lockdown a little longer. The governor and the 3 mayors talked and agreed on this before it was announced.
  • lemurcat2
    lemurcat2 Posts: 7,887 Member
    jenilla1 wrote: »
    lemurcat2 wrote: »
    ...I find the differences between the numbers in various places (for example, NY and CA), even places following basically the same policies for the same amount of time intriguing, although no idea what the answers are.

    My understanding is that CA started the mandatory social distancing policies several days before NY. Every day makes a huge difference in slowing things down. I think another big difference is that NY has a huge population all jammed up together in close quarters with a large share of that population using mass transit. CA has a huge number of people, but they are more spread out, and public transportation isn't used by the majority.

    Yes, I see those explanations, but the difference still seems huge. This article: https://www.vox.com/2020/4/21/21224944/coronavirus-hot-spots-covid-new-york-michigan-florida poses a number of reasons, including those, but it just doesn't seem entirely sufficient to me.

    And based on the new possible infection rate numbers for LA County (which are pretty iffy still from what I've read), it would be less so:

    "Skeptics have noted that the conclusions seem at odds with some basic math. In New York City, where more than 10,000 people, or about 0.1 percent of the population, have already died from Covid-19, this estimated fatality rate [based on the new LA numbers] would mean nearly everyone in the city has already been infected. That’s unlikely, since the number of new cases, and deaths, is still mounting, fast."

    From here: https://www.wired.com/story/new-covid-19-antibody-study-results-are-in-are-they-right/

    There's a new studies out of China that suggest that not only are there numerous strains of the virus, but that some of the mutations are more virulent: https://www.jpost.com/health-science/coronavirus-has-mutated-into-at-least-30-different-strains-new-study-finds-625333

    "The study could have future implications on the treatment of coronavirus, as several different strains have been found throughout the world. The United States, which has the world's worst death toll at 42,897, and 799,515 overall cases, has been struck by different mutations. New York, which itself had the worst death rate in the US, and the eastern coast show a strain of coronavirus similar to that found in Europe, whereas the western US has shown similarities with strains found in China."

    I'm not sure I believe that (more confirmation necessary), but I do wonder.

    On CA shutting down early, the Vox piece says: "The Bay Area issued the first shelter-in-place order in the US on March 16, and California issued a statewide stay-at-home order three days later — while New York didn’t impose its own mandate until March 22."

    However, Chicago (and IL as a whole) imposed our shelter-in-place at the same time as CA, and yet the outbreak here seems much worse, even though it also seems likely it was spreading in CA earlier.

    CA has had 35,396 positive cases, and 1354 deaths vs. 35,108 cases and 1565 deaths in IL, even though CA has 3 times the population of IL. (CA has tested more, but not if you adjust for it having more than 3x the population.)

    Maybe weather is part of it (FL has had a lot of cases, but given many other factors, seems like more would have been expected), and Chicago relies more on public transportation, but it still seems odd.